This story talks about Darkstorm (not his real name btw), a 14yo italian (ethnically indian) high schooler, and how he becomes what he will become (warning, it contains sensitive and disturbing content)

A boy from the forgotten Kusho clan was spared because of his weak mentality and power. His name was Menji and he was taken in by the C.R.A.B.S. After his profuse training in the sacred Chi art he and his companions fight against the association led by sin to restore peace to Openreich.

4 kids chosen by gods save the world from a dark god

Kian is a 9 year old boy who was living in the year 1156, in Japan. His life consisted of the usual, playing with other kids, sleeping,eating and much more. But on That Day... That Hopeless day where the flowers of hope died and the birds of freedom cried... A war broke out. Kians journey is to try getting strong enough to stop all wars that are on the planet.